Trouble with PIC16F88 (chip hangs up)

[nobner]

I checked the configuration bits - all seems ok, but the problem is still alive.
I would be thankfull for a good idea?

[Acetronics2]

Hi,

Are you sure the supply voltage goes to < 1 v when you re-apply power ???

Easy confirm :

1) Turn MCLR to ON AND Always let The Watchdog ON if no valuable reason to cancel it ( @ Sleep ...i.e.)

wdt_off, MCLR_off

I'm not not kidding, here ... but ... I could !!!

2) enable the Brownout function ...

3) Allow the Power-up Timer ...

4) use a R/C/D reset circuit instead of a simple resistor ( Datasheet $15.2 )

Alain